聚乙烯醇明胶混合水溶液的静电纺丝.pdf

功 能 高 分 子 学 报 Journal of Fu nct ional Polym ers Vol . 21 No. 3 2008年 9月 收稿日期: 2008-03-10 基金项目:天津市高等学校科技发展基金( 作者简介:张春雪( 1969- ) ,女,浙江诸暨人,博士,副教授,从事聚合物静电纺丝研究。E-m ail: ch xzhang@ t jut . edu. cn 聚乙烯醇明胶混合水溶液的静电纺丝 张春雪1, 2 , 崔龙辉2 , 袁晓燕1 , 盛 京1 ( 1.天津大学材料科学与工程学院, 天津 300072; 2. 天津理工大学化学化工学院, 天津 300191) 摘 要: 将聚乙烯醇与明胶混合水溶液进行静电纺丝, 制备了聚乙烯醇与明胶混合超细纤维及 其电纺膜, 研究了混合纺丝液的组成对纺丝液的粘度、表面张力和电导率的影响, 观察了纤维的微 观形貌,并对电纺膜进行了差示扫描量热测定。结果表明:当混合液中明胶含量小于 20%时, 静电 纺丝可以稳定进行。随着明胶含量由 5%逐渐增加至 25%, 混合超细纤维的平均直径先是由 260 nm 逐渐下降至 207 nm 而后又逐渐增加至 320 nm。明胶的含量低于 15%时, 不影响其混合电纺 膜中 PVA的结晶。 关键词: 静电纺丝;聚乙烯醇; 明胶; 混合 中图分类号: O63 文献标识码: A 文章编号: 1008-9357( 2008) 03-0312-05 Electrospinning of Poly( Vinyl Alcohol ) / Gelatin Aqueous Solution ZHANG Chun-xue 1, 2 , CU I Long-hui2 , YUAN Xiao-yan1 , SHENG Jing1 ( 1. School of M aterials Science and Engineering, T ianjin U niversity , T ianjin 300072, China; 2. School of Chemist ry and Chemical Engineering, T ianjin University of Technology , T ianjin 300191, China) Abstract: Ultraf ine f ibers and fiber mats o f poly ( vinyl alcohol) w ith gelat in w er e prepared by elect ro- spinning in aqueous solution. Ef fects o f the composit ion of the spinning solut ion on the propert ies such as viscosity, surface tension and conduct ivity w ere studied. The mor pholog y of f ibers w as obser ved, dif feren- t ial scanning calorimetry w as also conducted. The r esults show that the elect rospinning is stable w hen gelatin content is less than 20% . With gelatin content increased f rom 5% to 25% , the average diameter of fiber s decreased from 260 nm to 207 nm at f irst , and then increased to 320 nm gradually. According to dif ferent ial scanning calor imetry thermal analysis, addition of gelat in has lit t le ef fects on the crystallinity of PVA in electro spun PVA-gelat in blend f iber mats, w hen gelat in content is 15% less. Key words: elect rospinning; po ly( v inyl alcoho l) ; gelat in; blend 静电纺丝作为一种直接且相对容易的纳米纤维制备方法,具有大规模连续生产纳米纤维的潜力,近年来